Speaker



FIG. 1 is a perspective view of a new design for a speaker;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a back elevational view of FIG. 1;

FIG. 4 is a left side elevational view of FIG. 1;

FIG. 5 is a top plan view of FIG. 1; and,

FIG. 6 is a bottom plan view of FIG. 1.

The broken line showing on the drawing disclosure is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a speaker, as shown and described. 